Simplify this expression 6m/18(m+n)

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is